Car-bolster.



' PATENTED SEPT. ll, 1906.y

J. S. STEVENSON. i

CAR BOLSTER.

APPLIOATION FILED Mmm, 1906.

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JOHN S. STEVENSON, OF DETROIT, MICHIGAN.

CAR-BOLSTEB.

Specification of Letters Patent.

Patented Sept. 11, 1906.

Application led March 5|` 1906. Serial No. 304.368.

To all whom it may concern:

Beit known that I, JOHN S. STEvENsoN, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Car-Bolsters, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to new and useful improvements in car-bolsters; and it consists in the construction of a bolster comprising a tapering trough-shaped body laterallyflanged at the top, with interior reinforcing members riveted to the sides and having complementary flanges and with top ties. The body of the bolster is also of peculiar construction, being made of a single piece with integral bottom and ends.

In the drawings, Figure l is a side elevation of my improved bolster, half in section. Fig. 2 is a top plan view; and Fig. 3 is a vertical cross-section on line :t Fig. 1.

The body A, I make from a single piece of pressed or shaped steel troug -shaped in cross-section, widest at the center, tapering or narrowing to the point B, having the parallel or straight end portions C. The bottom, which is continuous, has the middle section or center-bearing section a. From this point it inclines upwardly to both ends in the inclined sections b, merging into the straight sections c, then into the upwardly-inclined end sections d, and terminating iush With the top, so as to make a closed end.

The sides have the outwardly-extending flanges D, as shown. Within I place the reinforcingchannels E, one on each side, as shown, and rivet them to the sides. Through the bottom flange F of the reinforcing-channels and through the bottom plate of the body I pass the rivets which secure the center bearing-plate G and the side bearings H. This gives three thicknesses of metal for these rivets and adds to the security of these parts. The top flanges I of these channels turn inward and are on the plane of the flanges D of the sides, forming a T-shaped top to the bolster. At suitable points I tie the sides together by the tie-plates J, riveted, preferably, to the flanges D and I. I find it is necessary only to extend these reinforcing-channels through the middle portion of the bolster and prefer to shape them longitudinally to conform to the body.

The center bearing-pin carrier I preferably shape to the shape of the sides o i ymake of a U-shaped piece K, riveted to the two U-shaped brackets L, which are riveted to the sides, as shown in Fig. 1. I'h'ave shown a central tie-plate J and this prefer- 6o ably has a sufficiently-large aperture therethrough to permit of insertion of the pin. .2' l

Such a bolster Ais light and strong andthe metal well placed to resist thestrains to which it is' subjected. The main or body 65 portion is composed of but three parts, easily shaped, and the riveting can be readily accomplished. By having closed ends dirt, dust, and snow cannot get into the same from the ends, and it saves the riveting in of 7o separate end pieces, as has been done with trough-shaped bolsters heretofore.

While I have shown channels for the reinforcing members, and prefer such shape, it is obvious that the lower flanges F may be omitted, thus leaving angle or Lsshaped members for such reinforcement.

What I claim as my invention is- 1'. A bolster comprising a trough-Shaped body deepest in the middle section and with 8o shallower ends, lateral flanges at the top of the sides thereof, vertical longitudinal reinforcing members riveted to the sides, and flanges at the top of said members complementary to the iHanges of the body.

2. A bolster comprising a trough-shaped one-piece body, deepest in the middle section, lateral flanges at the top of the sides thereof, reinforcing-plates, corres onding in the body, 9o riveted to such sides, and flanges on the reinforcing-plates complementary to those on the b dy.

3. A bolster comprising a trough-shaped body deepest in the middle section, having reduced ends and outwardly extending flanges at the top, interior reinforcing members riveted to the sides and complementary inwardly-extending flanges at the top.

4. In a bolster, a body portion comprising xoo a trough-shaped one-piece body deepest in the Vmiddle section and tapering toward the ends, the bottom plate being integral throughout and extending to a point flush with the top at the ends, laterally-extending flanges at the top of the body portion and reinforcing members extending the depth of the sides of the body portion and riveted thereto.

5. A bolster comprising a trough-shaped 11o one-piece body portion deepest at the middle section and tapering toward the ends, the

y those on the body.

6. In a bolster, the combination Witha trough-shaped body of a center-pin carrier comprising a perforated ,inverted-Ufshaped plate, U'shaped plates riveted to` the sides and to Which'the said center-pin carrier is atx tached, substantially as described.

7. A bolster' comprising a trough-shaped one-:piece body deepest in the middle section, latera'lllanges at the top ofthe sides, reini .fili

portions and thus closing forcingy channel-plates corresponding in shape to the shape of the sides of the body, and riveted to. the 'sides thereof, the upper ilange of the channel .extending in the plane of the flange on the sides of the body and the lower flange lying upon the center plate secured to the middle portion of the bolster by rivets passing therethrough, lthrough the bottom and flanges of the reinforcin bottom of the body, a

through the lower channel-plates. In testimony Whereo I ahX my signature in presence of tWo Witnesses.

JOHN S. STEVENSON.

Witnesses:

JAMES WHITTEMORF AMELrA WILLIAMS 

